Search

Chi H. Pham

Supervisory Patent Examiner (ID: 14849, Phone: (571)272-3179 , Office: P/2471 )

Most Active Art Unit
2611
Art Unit(s)
2616, 2667, 2611, 2731, 2607, 2471, 2745, 2631
Total Applications
629
Issued Applications
521
Pending Applications
51
Abandoned Applications
57

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19939866 [patent_doc_number] => 12311985 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-05-27 [patent_title] => Tank car recovery system and method of use [patent_app_type] => utility [patent_app_number] => 17/687214 [patent_app_country] => US [patent_app_date] => 2022-03-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 0 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 208 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17687214 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/687214
Tank car recovery system and method of use Mar 3, 2022 Issued
Array ( [id] => 18611867 [patent_doc_number] => 20230278598 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-07 [patent_title] => PROTECTIVE COVER FOR RAILCARS [patent_app_type] => utility [patent_app_number] => 17/683726 [patent_app_country] => US [patent_app_date] => 2022-03-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5811 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17683726 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/683726
PROTECTIVE COVER FOR RAILCARS Feb 28, 2022 Abandoned
Array ( [id] => 17929207 [patent_doc_number] => 20220324332 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-13 [patent_title] => System and Method for Supervised Autonomous Traffic Management [patent_app_type] => utility [patent_app_number] => 17/679121 [patent_app_country] => US [patent_app_date] => 2022-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14646 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17679121 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/679121
System and Method for Supervised Autonomous Traffic Management Feb 23, 2022 Abandoned
Array ( [id] => 19141456 [patent_doc_number] => 20240140272 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => A HOUSING FOR A SUNKEN ELECTRIC ROAD TRACK, A SUNKEN ELECTRIC ROAD TRACK AND A METHOD FOR ARRANGING A SUNKEN ELECTRIC ROAD TRACK ALONG A ROAD [patent_app_type] => utility [patent_app_number] => 18/548167 [patent_app_country] => US [patent_app_date] => 2022-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4968 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18548167 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/548167
A HOUSING FOR A SUNKEN ELECTRIC ROAD TRACK, A SUNKEN ELECTRIC ROAD TRACK AND A METHOD FOR ARRANGING A SUNKEN ELECTRIC ROAD TRACK ALONG A ROAD Feb 21, 2022 Pending
Array ( [id] => 17829574 [patent_doc_number] => 20220266878 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-25 [patent_title] => SYSTEM AND METHOD FOR SIGNALLING EVENTS THROUGH A VISIBILITY MARKER ASSOCIATED WITH A TRAIN [patent_app_type] => utility [patent_app_number] => 17/677443 [patent_app_country] => US [patent_app_date] => 2022-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4393 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17677443 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/677443
SYSTEM AND METHOD FOR SIGNALLING EVENTS THROUGH A VISIBILITY MARKER ASSOCIATED WITH A TRAIN Feb 21, 2022 Pending
Array ( [id] => 17850944 [patent_doc_number] => 20220280985 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-08 [patent_title] => CLEANING DEVICE AND METHOD OF SUBSTRATE TRANSFER DEVICE [patent_app_type] => utility [patent_app_number] => 17/673515 [patent_app_country] => US [patent_app_date] => 2022-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3480 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17673515 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/673515
Cleaning device and method of substrate transfer device Feb 15, 2022 Issued
Array ( [id] => 17611039 [patent_doc_number] => 20220153318 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-19 [patent_title] => Injection System and Method for Injecting Helium and/or Hydrogen in Critical Aerodynamic Areas Around a Capsule in a Tube Transportation System [patent_app_type] => utility [patent_app_number] => 17/666023 [patent_app_country] => US [patent_app_date] => 2022-02-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 32478 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 212 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17666023 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/666023
Injection System and Method for Injecting Helium and/or Hydrogen in Critical Aerodynamic Areas Around a Capsule in a Tube Transportation System Feb 6, 2022 Abandoned
Array ( [id] => 17776116 [patent_doc_number] => 20220242465 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-04 [patent_title] => Intrusion Detection [patent_app_type] => utility [patent_app_number] => 17/666067 [patent_app_country] => US [patent_app_date] => 2022-02-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6338 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17666067 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/666067
Intrusion Detection Feb 6, 2022 Pending
Array ( [id] => 17611043 [patent_doc_number] => 20220153322 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-19 [patent_title] => RAIL ROAD CAR TRUCK BOLSTER [patent_app_type] => utility [patent_app_number] => 17/665221 [patent_app_country] => US [patent_app_date] => 2022-02-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17112 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17665221 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/665221
Rail road car truck bolster Feb 3, 2022 Issued
Array ( [id] => 17611038 [patent_doc_number] => 20220153317 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-19 [patent_title] => Combined Pumping / Gas Source Unit Configured For Use in a Tubular Transportation System [patent_app_type] => utility [patent_app_number] => 17/589442 [patent_app_country] => US [patent_app_date] => 2022-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 28632 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 380 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17589442 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/589442
Combined Pumping / Gas Source Unit Configured For Use in a Tubular Transportation System Jan 30, 2022 Abandoned
Array ( [id] => 17829392 [patent_doc_number] => 20220266696 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-25 [patent_title] => ELECTRICAL SHUNT APPARATUS AND SYSTEM [patent_app_type] => utility [patent_app_number] => 17/580858 [patent_app_country] => US [patent_app_date] => 2022-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7404 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17580858 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/580858
Electrical shunt apparatus and system Jan 20, 2022 Issued
Array ( [id] => 18515074 [patent_doc_number] => 20230231349 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => SLIDABLE CURRENT COLLECTOR AND METHOD FOR CONTACTING CONDUCTOR RAIL [patent_app_type] => utility [patent_app_number] => 17/578072 [patent_app_country] => US [patent_app_date] => 2022-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13448 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17578072 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/578072
Slidable current collector and method for contacting conductor rail Jan 17, 2022 Issued
Array ( [id] => 17831089 [patent_doc_number] => 20220268393 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-25 [patent_title] => Pipeline Inspection Device [patent_app_type] => utility [patent_app_number] => 17/575146 [patent_app_country] => US [patent_app_date] => 2022-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6616 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 45 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17575146 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/575146
Pipeline Inspection Device Jan 12, 2022 Pending
Array ( [id] => 19034699 [patent_doc_number] => 20240084514 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-14 [patent_title] => RAIL SUPPORT ARRANGEMENT [patent_app_type] => utility [patent_app_number] => 18/261452 [patent_app_country] => US [patent_app_date] => 2022-01-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15074 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18261452 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/261452
RAIL SUPPORT ARRANGEMENT Jan 11, 2022 Pending
Array ( [id] => 18468257 [patent_doc_number] => 20230202538 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-29 [patent_title] => END OF TRAIN DEVICE WITH SELF-ALIGNMENT AND MOUNTING INTEGRITY MONITORING CAPABILITIES [patent_app_type] => utility [patent_app_number] => 17/646332 [patent_app_country] => US [patent_app_date] => 2021-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3492 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 59 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17646332 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/646332
End of train device with self-alignment and mounting integrity monitoring capabilities Dec 28, 2021 Issued
Array ( [id] => 20172421 [patent_doc_number] => 12391149 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-19 [patent_title] => Relocatable base for elevated power rails and method of deployment [patent_app_type] => utility [patent_app_number] => 17/563317 [patent_app_country] => US [patent_app_date] => 2021-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 8582 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17563317 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/563317
Relocatable base for elevated power rails and method of deployment Dec 27, 2021 Issued
Array ( [id] => 20263605 [patent_doc_number] => 12434576 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-07 [patent_title] => Power supply control device, power supply control program, and power supply control system [patent_app_type] => utility [patent_app_number] => 17/559196 [patent_app_country] => US [patent_app_date] => 2021-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 1180 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 231 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17559196 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/559196
Power supply control device, power supply control program, and power supply control system Dec 21, 2021 Issued
Array ( [id] => 17687147 [patent_doc_number] => 20220194439 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-06-23 [patent_title] => CHASSIS FOR A RAIL-BOUND TRANSPORT VEHICLE [patent_app_type] => utility [patent_app_number] => 17/557202 [patent_app_country] => US [patent_app_date] => 2021-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3729 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17557202 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/557202
CHASSIS FOR A RAIL-BOUND TRANSPORT VEHICLE Dec 20, 2021 Abandoned
Array ( [id] => 17533126 [patent_doc_number] => 20220111735 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-14 [patent_title] => VEHICLE FOR TRAVELLING ALONG A LINEAR ROUTE GUIDEWAY [patent_app_type] => utility [patent_app_number] => 17/558396 [patent_app_country] => US [patent_app_date] => 2021-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9133 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17558396 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/558396
VEHICLE FOR TRAVELLING ALONG A LINEAR ROUTE GUIDEWAY Dec 20, 2021 Pending
Array ( [id] => 19874151 [patent_doc_number] => 12267027 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-01 [patent_title] => Apparatus and method for simulating line running state of magnetic levitation (maglev) [patent_app_type] => utility [patent_app_number] => 17/555895 [patent_app_country] => US [patent_app_date] => 2021-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 4594 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 348 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17555895 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/555895
Apparatus and method for simulating line running state of magnetic levitation (maglev) Dec 19, 2021 Issued
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